Sewing-machine



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- R. G.. WOODWARD.

SEWING MACHINE. No. 466,264. vPai-.s111366 Deo. 29, 1891.

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SEWING MAGHINE. No. 466,264. Patented Dec. 29, 1891.

,wnNEssEs INVENTOR y {yw'u g. l maafzmmz @626m i, @QKLMM 4dinary purposeof overseaming or for making during the operation of sewing andconseimproved formof presser-foot, showing the 'positions of theneedles. Fig. 3a is a similar view showing a slightiy-dierent form ofUNITED STATES PATENT OFFICE.

RUSSEL G.

WOODWARD, OF VAUKEGAN, ASSIGNOR TO THE UNION SPECIAL SEWING MACHINECOMPANY, OF CHICAGO, ILLINOIS.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 466,264, dated December29, 1891.

Application filed March 27, 1891.

simultaneously two rows of interlocking stitches for use either insewing together the edges of two fabrics or for forming ornamental workupon -the face or edge of a fabric.

My invention consists, first, in the combination, with the driving partsof a sewingmachine,'of two needles set obliquely on the needle bar,adapted to form independent stitches, but vibrating from one side to theother of the tongue or tongues formed in the presser-foot orthroat-plate, or both, so as to form interlocking rows.

Further, the invention consists in the combination, with the twoobliquely-set needles adapted to vibrate from one side to the other of atongue or tongues formed in the presserfoot, throat-plate, or both, of afeeding arrangement to prevent stretching of the fabric quent curling ofthe edges when removed from the machine.

Finally, the invention consists in the details of construction of thepresser-foot and throat-plate and in certain other matters, all of whichwill be hereinafter described and specifically claimed.

My invention is illustrated in the accompanying drawings, in which-Figure 1 is a front side elevation of a sewing-,machine embodying myinvention. Fig. 2 is a front view showing alternating positions ofneedle-bar. Fig. 3 is a plan View of my Serial N0.386,615. (No model.)

presser-foot, but its equivalent. Fig. 3" is a similar view of athroat-plate. Fig. 4 is a similar View showing the stitches formed uponthe tongues of the presser-foot. Fig. 5 is a vperspective view of myimproved feed, and

is pivoted a vibrating arm A4, deriving motion from a link actuated froman eccentric on the lower shaft B of the machine, as illustrated inPatent No. 401,294, of April 9, 1889, granted to L. Muther and myself.

For use in overseaming with two needles or for the purpose of makinginterlocking Arows of stitches it is necessary in machines of thischaracter to provide means for giving to the needlebar,` in addition toits vertical movement, a lateral movement in respectto aline drawnlongitudinally through the feeding movement. I accomplish this movementby the means illustrated in Fig. 1, which, being described in connectionwith the above-mentioned patent, need not be herein particularlyreferred to. Instead, however, of having only one needle carried by theneedle-bar, I place in the needle clamp or collar attached to the bartwo needles n n', setting them obliquely to each other, as shown in theplan view in Fig.\3. By this arrangement it will be seen that twoindependent rows of zigzag stitching will be sewed simultaneously, theneedles traveling over into the path of each other, as shown in Fig. 7,thus forming interlocking' stitches. In connection with these twoneedles I employ two loopers b b', which have movement into the loop ofthe needle-thread and then swing across the path of movement of theirrespective needles in the direction of the length of feed and back againtoward the rear of the machine, the loopers and needles co-operating tomake the rows of stitching simultaneously and interlocking them. Themechanism for operating the single looper shown in Patent No. 401,294,above referred to, can be readily used for operating two withf IOO outnecessitating any change in construction, except to add the secondlooper.

In a two-line overseaming-machine in which the needles vibrate togetherfor the purpose of forming interlocking rows of stitches it is necessaryto provide some means for giving the desired looseness to the stitchesto allow of stretching of the fabric without breaking. This I accomplishby the particularconstruetion of presser-foot illustrated in Fig. 3.This presser-foot F is attached to the presserbar in any suitablemanner, and has formed in its base a large hole h, through which theneedles reciprocate. Extending partially across this hole approximatelyin a horizontal plane parallel with that of the direction of feed aretwo tongues c and d, the tongue c being herein shown as shorter and dlonger, the ends of said tongues being about as much oblique to eachother as are the needles. By this arrangement of tongues when theneedles vibrate they pass into their proper positions and forminterlocking stitches, the said tongues forming lingers over which thethreads are passed7 thus allowing a certain amount of looseness to thestitch, the stitch slipping off the tongues as the feed advances. Itwill be understood of course that instead of arranging the tongues inthe presser-foot they may be arranged on the throat-plate, as shown inFig. 3b, or, if desired, a long crooked tongue d might be used, as shownin Fig. 3a. If still greaterI looseness of the stitch is required, thepresser-foot and throat-plate may both be provided with the tongues.

As above stated, the main feature of the present invention consists inthe combination, with the needles set obliquely in anoverseaming-machine, of the presser-foot having a tongue or tongues soarranged as to co-operate with the needles to form two independent rowsof stitches made to interlock.

NVhile I have referred to the presser-foot as containing two tongues, Idesire it to be understood that I consider the placing of a long crookedtongue in the presser-foot or throatplate or the formation of thetongues on the throat-plate instead of on the presser-foot as clearlyequivalent constructions and consequently within the scope of myinvention.

My invention also includes, in combination with the above features, afeeding mechanism, one portion of which moves faster than the other,whereby curling of the edges of the fabric or that portion ornamented isprevented. A preferred form of mechanism by which I accomplish thisobject is illustrated in Fig. 5 and constitutes an improvement upon thefeed shown in Patent No. 299,568, granted to Muther and Dearborn June 3,1884.

The feeding mechanism above described consists of a rocking frame E,hinged to the bed-plate, having the feed-dog H mounted on it by means ofan arm E', pivoted at one end to a rock-shaft G on the upper portion ofthe frame E and acted upon by a lifting-cam atteaser tached to the mainshaft beneath the feeddog, together with certain other features notdeemed necessary to illustrate, as they are fully described in saidpatent.

In addition to the feed just described, my machine has an additionalfeed traveling in a space formed in the other feeddog and adapted totravel at a different rate of speed therefrom. This feed-dog I issecured to a bar K, made integral with or attached to a slottedupwardly-extending part or piece L, adapted to be secured by a bolt andnut vl to an upwardly-extending angular bracket M, secured at its lowerpart to the frame E, and provided with a slot, through which the bolt tpasses, the same forming a pivot-point for the dog-support. It will thusbe seen that in the movement of the rocking frame E as the pivotal pointof the bar K is above and farther from the point of oscillation than thebar which actuates the other feed-dog, the feed-dog I will, when themovement of lower -shaft is communicated to the upper feed,

move faster than said lower feed.

It will of course be obvious that the amount of feed of the dogl maybechanged by raising or lowering the point of attachment of its supporting-bar on the bracket llI by means of the bolt and nut. ingmechanism for accomplishing the same result may be used; but that shownand described is preferable, and is claimed in an application filed byme July S, 1891, Serial No. sessie.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

l. In an overseaming-machine having a suitable needle-bar andreciprocating.,r and vibrating mechanism therefor, the combination oftwo or more needles set oblique to the line of feed, and a presser-footbeneath the same provided with an opening in its base and a tongue ortongues extending into said opening, said needles vibrating from side toside of said tongue or tongues andforming simultaneously two rows ofinterlocking stitches, substantially as described.

2. In an overseamingmachine having a suitable needle-bar andreciprocating and vibrating mechanism therefor, the combination of twoor more needles set oblique to the line of feed, a presser-foot beneaththe same provided With an opening in its base and a tongue or tonguesextending into said opening, said needles vibrating from side to side ofsaid tongue or tongues and forming simultaneously twolrows ofinterlocking stitches, and a feeding mechanism for the fabric, one partof which moves faster than the other, su bstantially as described.

3. In combination with the needles of a two-line overseaming-maehine andmeans for laterally vibrating the same, a presser-foot having an openingfor the passage of the needles, and a slack-forming device for each nee-Any suitable form of feed- IOO IIO

dle, extending into said opening, over which ing toward the other end,one tongue being Athe stitches are formed, substantially as deof greaterlength than the other. 1o scribed. In testimony whereof I affix mysignature in 4. The combination, with the needles, of a presence of twowitnesses. 5 presser-foot for sewing-machines having an RUSSEL G.VVOODVVARD.

opening for the passage of the needles, means W'itnesses: for vibratingsaid needles laterally, and two CHAS. L. STURTEVANT,

tongues extending from one end of said open# CHESTER MCNEIL.

